Low-energy-consumption pressure-controllable hydrogen production and supply device and fuel cell system

Abstract

The invention discloses a low-energy-consumption pressure-controllable hydrogen production and supply device, and the device comprises a water adding tank, a water conveying pipeline, a first water storage chamber, a reaction chamber, a second water storage chamber, a spring chamber and a gas conveying pipeline. According to the device, hydrogen is prepared through a chemical reaction generated after a hydrogen production material and an aqueous solution are mixed, the reaction process is controlled according to the principle of a Kipp generator, and meanwhile, a spring chamber is additionallyarranged to pressurize the generated hydrogen, so the prepared hydrogen can be directly supplied to a fuel cell for use. And according to the hydrogen production pressure constraint equation providedby the invention, the hydrogen production pressure of the hydrogen production equipment can be changed by adjusting a series of parameters. The device does not need participation of monitoring and control elements, extra system energy consumption is avoided, the hydrogen production process is safe and controllable, and the application range is wider. The invention further provides a portable fuelcell power generation system loaded with the hydrogen production and supply device, and instant hydrogen production, supply and power generation are achieved.

Description

technical field [0001] The invention belongs to the technical field of hydrogen preparation and power generation application, and in particular relates to a low energy consumption pressure controllable hydrogen production and supply device and a fuel cell system. Background technique [0002] In order to reduce the dependence on fossil fuels and reduce their serious impact on the environment, the development of eco-friendly, new sustainable green energy technologies has become an urgent problem for us to solve. Among them, one of the most attractive options is hydrogen and fuel cells. Hydrogen has a high calorific value and energy density, while fuel cells that mainly use hydrogen as fuel have relatively high efficiency and low emissions. Realizing low-carbon or even zero-carbon emissions can effectively alleviate the greenhouse effect and environmental pollution. Among various types of fuel cells, proton exchange membrane fuel cells (PEMFC) have the highest energy conversi...

AI Technical Summary

Problems solved by technology

These devices usually realize the control of the hydrogen production reaction according to the following logic: (1) Control the hydrolysis reaction process according to the output power of the fuel cell, but due to the certain delay of the chemical reaction, the perfect match of the hydrogen production-hydrogen consumption rate cannot be achieved ; (2) The hydrogen pressure in the fixed hydrogen production equipment is at a certain constant value or within a certain range, but the pressure usually needs to be higher or much higher than the working pressure of the fuel cell, and higher pressure may bring higher safety Hidden danger

Moreover, the realization of the above control functions usually requires the participation of supporting monitoring and control components (pressure sensors, control boards, etc.) and water pumps. The use of these components increases the potential risks of additional system energy consumption and equipment failure. These devices usually require explosion-proof protection measures, which undoubtedly increases the production cost and complexity of the system, and runs counter to the design principle of portability

In some hydrogen production devices similar to the principle of the Kipp generator, because the hydrogen pressure cannot meet the working requirements of the fuel cell, an additional hydrogen compression device is required, which also brings additional power consumption

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